MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

More about Magnetic Dipoles

An electron w...

Question

An electron with charge -e and mass m travels at a speed v in a plane
perpendicular to a magnetic field of magnitude B. The electron follows a
circular path of radius R. In a time, t, the electron travels halfway around the
circle. What is the amount of work done by the magnetic field?

Open in App

Solution

According to work energy theorem change in K E is 0

Suggest Corrections

thumbs-up

0

Similar questions

Q. An electron enters a uniform magnetic field with a path perpendicular to the field lines and moves in a circular path of radius

R

.
A positron (same mass of an electron but opposite charge) enters the same magnetic field in a path perpendicular to the field with four times the kinetic energy.
Compared to the electrons path, the radius of the protons circular path is:

Q. An electron of mass

m

q

is travelling with a speed

v

along a circular path of radius

r

at right angles to a uniform magnetic field

B

. If speed of the electron is doubled and the magnetic field is halved, then resulting path would have a radius of

Q. Electron of mass m and charge

q

is traveling with a speed along a circular path of radius

r

at right angles to a uniform magnetic field of intensity B. If the speed of the electron is doubled and the magnetic field is halved the resulting path would have a radius.

Q. A proton enters a uniform magnetic field with a path perpendicular to the field lines and moves in a circular path of radius

R

. An electron enters the same magnetic field at the same speed in a path perpendicular to the field.
Compared to the protons path, the radius of the electrons circular path is:

Q. An electron and a proton each travel with equal speeds around circular orbits in the same uniform magnetic field as indicated (not to scale) in fig. The field is into the page on the diagram. The electron travels .... around the .... circle and the proton travels .... around the .... circle

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Torque on a Magnetic Dipole

PHYSICS

Watch in App

explore_more_icon

Explore more

More about Magnetic Dipoles

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon